Electric motor.



APPLICATION FILED 00114, 1911.

E. M.BARNES.

ELECTRIC MOTOR.

Patented Aug. 6,1912.

UNITED STATES PATENT OFFICE.

EDWARD M. BARNES, 01? HASTINGS, MICHIGAN, ASSIGNOR TO ADVANCE MFG. 00., OF HASTINGS, MICHIGAN, A CORPORATION OF MICHIGAN.

ELECTRIC moron.

To allwhom it may concern;

Be it known that I, EDWARD M. BARNES, a citizen of the United States, residing at Hastings, Michigan, have invented certain new and useful Improvements in Electric Motors, of which the following is a specification. r

This invention relates to improvements in electric motors.

My improvements relate particularly to the casing for electric motors, which is adapted to provide an effective moun ing for the parts of the motor.

My improved motor is specially designed by me for use on carpet sweepers, and I here show the same as applied to a carpet sweeper, such as is shown in my application for Letters Patent filed June 17th, 1911, Ser. No. 633,642, this application being a division thereof- The main objects'of this invention are to provide an improved motor casing which may be formed of sheet metal, in which the parts are very simple and economical to produce and assemble, and afford an effective support for the motor parts, as well as a casing therefor.

Further ob ects, and objects relating to structural details, will definitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and means described in the following specification.

The invention is clearly defined and pointed out in the claims.

A structure which is a preferred embodiment of my invention, is clearly illustrated in the accompanying drawing, forming a partof this specification, in which:

Figure I is a detail perspective view of a vacuum cleaner structure embodying the features of my lnvention. Fig. II is an enlarged detail view, partially in vertical section, on a line corresponding to line 2-2 of Fig. I. Fig. III is a horizontal section taken on a line corresponding to line 33 of Fig. II, parts being shown in full lines. Fig. IV is a detail vertical section taken on aline corresponding to line 44 of Fig. III, the bolt 10 being shown in full lines. Fig. V is a detail vertical section of a slightly modified structure, showing the casing adapted for general applicationf Specification of Letters Patent.

In the drawings, similar reference characters refer to similar parts throughout the several views, and the sectional views are taken looking in the direction of the little arrows at the ends of the section lines.

Referring to the drawing, the fan casing 1 of the vacuum cleaner structure illustrated is mounted upon the shoe 2. As the structural details and features of this shoe and fan casing form no partof my present invention, I donot describe the same with further detail herein.

The motor casing consists of a section 3, which, in the structure illustrated, is mounted upon the fan or driven member casing 1, and a top or outer section 4 mounted on the section 3. Both of these motor casing sections 3 and 4 are sheet metal stampings. The motor casing section 3 is provided at its inner end with an outturned flange 5, which rests upon and is secured to the driven member casing 1 by bolts or rivets not here illustrated. At its outer end, the section 3 is shouldered at 6 to receive the outer section 4, and is provided with an inturned flange 7. This flange 7 is provided with ears 8, on which the fields 9 of the motor are mounted by means of the bolts 10, the fields being arranged under the flange, as is clearly shown in the drawings. The flange 7 is providedwith upwardly-pr0jecting brackets or arms 11, in which the brush holders 12 are mounted. The fields and brushes are thus securely supported and maintained in their proper relation to the other parts of the motor. I do not describe the structural details of these fields, as'they form nopart of my present invention.

The upper end of the motor shaft 13 is supported" by the bearing 14 carried by the casing section 4, the casing section being provided with an inwardly-projecting bear ing supporting flange 15, into which the bearing is forced, the bearing having a flange 16 at its outer end.

v Patented Aug; 6, 1912. Original a lication-med June :17, 1911, .Serial K026335424... nividedcandthisapplication filed October 14,.

Serial No. 654,515.

The brushes 17 coact with the commutator 18 on the motor shaft. The tubular brush holders 12 are provided with tubular insulating sleeves 19 arranged through suitable flanged openings in the arms 11. The brushes 17 are slidably mounted in the holders and yieldingly supported therein by means of the springs 20, the inner ends of is supported on the driven member casingl,

the casing being provided with a flange opening 25 for the bearing, which has a flange 26 at its outer end similar to that on the bearing 15.

The fan 27, which is the driven member in the structure illustrated, is arranged upon the end of the shaft and secured by suitable nuts. An oil conduit 28 extends from the casing wall to the bearing 24. The outer bearing is lubricated from the end.

With the parts of the casing thus formed and arranged, the parts of the motor areincased and protected, and effectively supported so that they, are kept in alinement and no additional brackets or supporting means are required. The casing is very economical to produce and is easily assembled and owing to the form of the parts or sections thereof, can be made of very light material and is still very strong and rigid.

In Fig. V, I show a casing modified for general purposes, the casing section 3 being shouldered at its lower end to receive the section 29, which is drawn in at its inner end to close the end of the casing. The..

bearing 24 is mounted in the casing sec-- tion 29.

Other modifications will no doubt suggest themselves to those skilled in the art to which my invention relates. I

I have illustrated and described my improvements in Figs. I to IV in the form in which I have embodied the same in manufacturing for the market. I have not attempted to illustrate or describe all the various modifications which I conceive to be possible, as they will. as stated, no doubt be obvious to those skilled in the art, but I desire to be understood as claiming the same specifically, as illustrated, as well as broadly within the scope of the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. The combination of'a driven member casing; a cylindrical motor casing formed of sheet metal mounted on said driven member casing and consisting of an inner section having an out-turned flange at its inner end] secured to said driven member casing, and an inturned flange at its outer end. said inturned flange being provided with upwardly-projecting arms and inwardly-proiecting ears. and an outer section sleeved upon said inner section. said.

inner section being shouldered to receive said. outer section; a motor comprising a shaft, a commutator, an armature, and field magnets, said field magnets being arranged under said flange at the outer end of said inner section and secured to the inwardlyprojecting ears thereof; brush holders mounted on said arms on said flange; and bearings for said shaft, the inner bearing being mounted on the said driven member casing and the outer bearing on said outer section of said motor casing.

'2. The combination with a driven member casing; of sheet metal mounted. on said driven member casing and consisting of an inner sec tion having an inturncd flange at its outer end, said inturned flange being provided with upwardly-projecting arms and inwardlv-projecting ears, and an outer section sleeved upon said inner section; a motor comprising a shaft, a commutator, an armature, and field magnets, said field magnets being arranged under said flange at the outer end of said bottom section and secured to the inwardly-proiecting ears thereof; brush holders mounted on said arms onsaid flange; and bearings for said shaft, the inner bearing being mounted on the said driven member casing and the outer hearing on said outer section of said motor casing.

3. The combination with a driven member casing, of a cylindrical motor casing formed of sheet metal mounted on the said driven member casing and comprising an inner section having an out-turned flange at its inner end secured on said driven member casing, and an inturned flange at its outer end, and an outer section sleeved upon said inner section; a motor comprising a shaft, a commutator, an armature and field mag: nets. said field magnets being mounted on said flange at the outer end of said inner section; brush holders mounted on said flange; and bearings for said shaft. the inner bearing being mounted on said driven member casing and the outer bearing on said outer motor casingsection.

4. The combination of a driven member casing; a motor casing formed of sheet metal mounted on said driven member casing and comprising an inner section having an inturned flange at its upper end, and an outer section sleeved upon said inner section; a motor comprising a. shaft, a commutator, an

armature, and field magnets, said field magnets being mounted on said flange at the outer end of said inner section; brush holders mounted on said flange; and bearings for said shaft, the inner bearing being mounted on said driven member casing and the outer bearing on said outer motor casing section.

5. The combination of a cylindrical motor casing formed of sheet metal and comprising an 1nner section having an outa cylindrical motor casing formed turned flange at its inner end, and an inturned flange at its outer end, and an outer section sleeved upon said section; a member to which said inner flange of saidinner section is secured; and a motor comprising field magnets, said field magnets being mounted on said flange at the outer end of said inner section.

6. The combination of a cylindrical motor casing formed of sheet metal consisting of a section having an inturned flangeat one end, said flange being provided with laterallyprojecting arms and inwardly-projecting ears, and a second section sleeved upon said flanged section, said flanged section being shouldered to receive said second section; a motor comprising a shaft, a commutator, an armature, and field magnets, said field magnets being arranged against said flange and secured to the inwardly-projecting ears thereof; brush holders mounted on said arms on said flange; and a bearing for said shaft mounted on the said second section of said casing.

7. The combination of a cylindrical motor casing formed o'ltsheet metal consisting of a section having an inturned flange at one end, said flange being provided with laterally projecting arms and inwardly-projecting ears, and a second section sleeved upon said flanged section, said flanged section being shouldered to receive said second section; a motor comprising a commutator, an armature, and field magnets, said field magnets being arranged against said flange andsecured to the inwardly-projecting ears thereof and brush holders mounted on said arms on said flange.

8. The combination of a cylindrical motor casing formed of sheet metal consisting of a bottom section having an inturned flange at its inner end, said flange-being provided with laterally-projecting arms, and a second section sleeved upon said flange section; a motor comprising a shaft, a commutator, an armature, and field magnets, said field magnets being secured to said flange; brush holders mounted on said arms on said flange; and a bearing for said shaft mounted on the said second section of said casin 9. The combination of a cylindrical motor casing formed of sheet metal consisting of a bottom section having an inturned flange provided with laterally-projecting arms; and asecond section sleeved upon said flanged section; a motor comprising a shaft, a commutator, an armature and field magnets, said field magnets being secured to said flange; and brush holders on said arms on said flange.

10. The combination of a motor casing formed of sheet metal and comprising a section having an inturned flange at one end, and a second section sleeved upon said flanged section; and a motor comprising field magnets, said field magnets being mounted on said flange on said motor casing section.

11. The combination with a motor, of a cylindrical sheet metal motor casing comprising a pair .of sections, the one section being provided with an inturned flange at one end and being shouldered to receive the other casing section, the other casing section bem cup-shaped and inverted thereon; and a motor shaft bearing mounted on the other section of said motor casing, the motor field and magnets and brushes being mounted on said inturned flange of said motor easin 12. The combination with a motor, of a cylindrical sheet metal motor casing comprising a pair of sections, one section being provided with an inturned flange at one end, the other section being cup-shaped and inverted thereon; and a motor shaft bearing mounted on the second section of said motor casing, the motor field magnets being mounted on said flange of said motor casing section.

In witness whereof, I have hereunto set my hand and seal in the presence of two witnesses.

EDWARD M. BARNES. [In s.] 

